AUG 13, 2026 · REVIEW
Efficacy and safety of adjuvant CDK4/6 inhibitors in hormone receptor–positive, HER2-negative early breast cancer: Updated evidence from a systematic review and meta-analysis
Journal of Oncology Pharmacy Practice
A rigorous meta-analysis of four Phase III RCTs with mature survival data demonstrating clear efficacy separation between drug classes (abemaciclib/ribociclib benefit vs palbociclib non-benefit) in a large population, with adequate power and low heterogeneity.
Reported
Sample size17784
Pooled HR (abemaciclib/ribociclib…0.69
95% CI for IDFS HR0.63–0.76